arch/arm/mach-shmobile/setup-r8a7779.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * r8a7779 processor support
   4  *
   5  * Copyright (C) 2011, 2013  Renesas Solutions Corp.
   6  * Copyright (C) 2011  Magnus Damm
   7  * Copyright (C) 2013  Cogent Embedded, Inc.
   8  */
   9 #include <linux/init.h>
  10 #include <linux/irqchip.h>
  11
  12 #include <asm/mach/arch.h>
  13 #include <asm/mach/map.h>
  14
  15 #include "common.h"
  16 #include "r8a7779.h"
  17
  18 #define HPBREG_BASE     0xfe700000
  19
  20 /* IRQ */
  21 #define INT2SMSKCR0     0x822a0 /* Interrupt Submask Clear Register 0 */
  22 #define INT2SMSKCR1     0x822a4 /* Interrupt Submask Clear Register 1 */
  23 #define INT2SMSKCR2     0x822a8 /* Interrupt Submask Clear Register 2 */
  24 #define INT2SMSKCR3     0x822ac /* Interrupt Submask Clear Register 3 */
  25 #define INT2SMSKCR4     0x822b0 /* Interrupt Submask Clear Register 4 */
  26
  27 #define INT2NTSR0       0x00060 /* Interrupt Notification Select Register 0 */
  28 #define INT2NTSR1       0x00064 /* Interrupt Notification Select Register 1 */
  29
  30 static void __init r8a7779_init_irq_dt(void)
  31 {
  32         void __iomem *base = ioremap(HPBREG_BASE, 0x00100000);
  33
  34         irqchip_init();
  35
  36         /* route all interrupts to ARM */
  37         writel(0xffffffff, base + INT2NTSR0);
  38         writel(0x3fffffff, base + INT2NTSR1);
  39
  40         /* unmask all known interrupts in INTCS2 */
  41         writel(0xfffffff0, base + INT2SMSKCR0);
  42         writel(0xfff7ffff, base + INT2SMSKCR1);
  43         writel(0xfffbffdf, base + INT2SMSKCR2);
  44         writel(0xbffffffc, base + INT2SMSKCR3);
  45         writel(0x003fee3f, base + INT2SMSKCR4);
  46
  47         iounmap(base);
  48 }
  49
  50 static const char *const r8a7779_compat_dt[] __initconst = {
  51         "renesas,r8a7779",
  52         NULL,
  53 };
  54
  55 DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)")
  56         .smp            = smp_ops(r8a7779_smp_ops),
  57         .init_irq       = r8a7779_init_irq_dt,
  58         .init_late      = shmobile_init_late,
  59         .dt_compat      = r8a7779_compat_dt,
  60 MACHINE_END